Re: bonding + vlan + bridge duplicate packet problem

[Dan White <dwhite@xxxxxxx>]

On 18/11/10 12:34 +0000, Alessandro Bono wrote:
> Hi
>
> I have a problem stacking bonding + vlan + bridge, typically my servers
> has two nic attached to two switch, one per nic, so I use bond in active-
> passive configuration, on top of this I create vlans and a bridge for vlan
> On ubuntu my network configuration are like this
>
> auto bond0
> iface bond0 inet manual
>        slaves eth0 eth1
>        bond_mode active-backup
>        bond_primary eth0
>        bond_miimon 100
>
>
> auto br18
> iface br18 inet static
>        address x.x.x.243
>        netmask 255.255.255.0
>        gateway x.x.x.254
>        bridge_ports bond0.18
>        bridge_fd 0
>        bridge_maxwait 0
>
>
> auto br23
> iface br23 inet manual
>        bridge_ports bond0.23
>        bridge_fd 0
>        bridge_maxwait 0
>
> and so on
>
> This machines are used as host for virtual machine, so vm are attached to
> one or more of these bridge If either eth0 and eth1 are up there are lots
> of this message in syslog
>
> bond0.18: received packet with own address as source address

Maybe you have a virtual machine that's sourcing frames with a duplicate
MAC address? Does brctl showmacs <brX> look sensible?

Also, that could be a mismatch in your bond configuration between you and
the switch, although I don't know of a particular scenario where that would
happen. Maybe you're sending BDPU packets out towards the switch and you
have STP enabled on it?

--
Dan White
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